[mdjlucan]

Just noticed these marks again on my pear tree leaf Any idea what this is

[Lardman]

Looks like rust to me - bit early though. What do the under sides of the leaves look like ?

[Growster...]

Possibly Leaf Blister Mite.

We were plagued last year, and the leaves were pretty bad after a while!

Look up Vitax Winter Tree Wash, as you may just be in time to spray the branches, as Spring has arrived so late!